Hi have following line in my /etc/fstab //server/dir /mnt/dir cifs defaults,user,noauto,sec=krb5 0 0 mounting works flawlessly, unsing the ticket obtained through pam_krb5 at login. However umount /mnt/it leads to : umount: only root can unmount //server/dir from /mnt/dir There is no point to allowing user to mount but forbiding them yo umount the directory they mounted. DO someone have an idea on this problem, or should I report a bug against umount ?